OS: Windows Vista (x64) / Windows 7 (x64) Processor: Intel Core 2 Duo 2.4Ghz / AMD Athlon 64 X2 5200+, 2.6GHz Memory: 2 GB RAM Graphics: 512 MB Nvidia GeForce 8800 / ATI Radeon HD 3870 DirectX: Version 9.0c Network: Broadband Internet connection Hard Drive: 10 GB available space